Linux · Security advisory · October 15, 2025

DSA-6025-1: firefox-esr security update

DSA-6025-1, released October 15, 2025, fixes 1 CVE in firefox-esr. None of them is reported as exploited. Patch Radar priority: High.

High
CVEs closed
1
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0051
43rd percentile

Fixed package versions

ProductReleaseFixed in
firefox-esrDebian 12.15 (bookworm)140.4.0esr-1~deb12u1
firefox-esrDebian 13.5 (trixie)140.4.0esr-1~deb13u1

CVEs this fix closes

PriorityCVETitleImpactCVSSEPSSExploitation
High CVE-2025-11708 Use-after-free in MediaTrackGraphImpl::GetInstance() 9.8 0.0051 None reported
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